Yearly Archives: 2011

Caring for your Dog, Diseases of dogs, Dogs, general, Skin diseases of Dogs

Flea allergy

What is flea allergy?

Some dogs are allergic to fleas and react with non-stop scratching and biting. Normal dogs are only mildly irritated by fleas. The flea allergic dog is allergic to flea saliva. Just one flea bite causes intense and long lasting itchiness.

The dog chews, licks, or scratches over the rump, on the belly and down the legs. This causes hair loss and damage to the skin. Breaks in the skin allow bacteria in and infection to develop.

What is the proper treatment?

We must eliminate all fleas on the dog and in the environment.

Capstar or Comfortis kill the fleas and paralyse flea mouthparts preventing deposition of saliva.

Every month treat your dog with Advantage, Advocate, Advantix, Frontline, Revolution, or Comfortis to keep flea numbers as low as possible.

Fleas spend most of their life cycle off the dog as larvae and pupae in bedding, carpet, dirt and leaves. Wash bedding in hot water and dry in the sun.  Vacuum carpets and furniture often. Rake up leaves in shady places and provide outside kennels or hidey holes off the ground.  Call a professional to fumigate your house.

Flea control depends on knowing the life cycle of fleas.

Cortisone products like prednisolone block the allergic reaction and give relief from the intense itching.

If your dog develops a bacterial infection in the skin, your vet will prescribe antibiotics.

Diseases of dogs, Dogs, general, Skin diseases of Dogs

Sarcoptic mange or scabies

Itchy dog?

Sarcoptic mange causes severe itching.  Dogs chew and scratch their skin constantly.  They lose hair and the skin is thick and red, especially on the ears, legs and belly.

What causes sarcoptic mange?

It is caused by a mite that lives on the skin of any age dog.  It’s also called fox mange. Many dogs catch it from foxes.

Is it contagious?

Sarcoptic mange is highly contagious to other dogs. Humans in close contact with their dog  can catch it, too.  Although the mites are not able to complete their life cycle on humans, they cause a rash and severe itching before they finally die.  Contact your family doctor or pharmacist for advice on treatment.

How is sarcoptic mange diagnosed?

Diagnosis is made by scraping the skin with the side of a scalpel blade and examining it under the microscope.  Despite severe itchiness there are often only a small number of mites present on the dog.  If all skin scrapings are negative and we are still suspicious we do a treatment trial.

How is it treated?

The spot on treatment Revolution applied weekly for 3 weeks is easy and effective.  Sometimes we inject or drench with ivermectin weekly. Ivermectin is not licensed for use in dogs and is dangerous for collie breeds.

All dogs in contact with the affected dog should be treated.

Discard the dog’s bedding before treatment.

If any member of the family develops an itchy skin rash, please tell your doctor that you have been exposed to a dog with sarcoptic mange, also known as scabies.

Diseases of dogs, Dogs, general, Poisoning

Rat bait poisoning

Dogs love the taste of most rat and mouse poisons so keep them well out of reach of pets. Do not allow pets near areas where you have laid rat bait.

Most rat and mouse baits contain a form of warfarin. Warfarin stops the blood clotting. Owners often don’t notice signs of rat bait ingestion for a couple of days.

If you know your pet has consumed a rat bait come straight to the Veterinary Surgery. An emetic will make your pet vomit up the bait and minimise absorption of the poison.

Signs of warfarin poisoning:

  • Pale gums
  • Lethargy or resting more than usual
  • Blood in urine
  • Blood on faeces
  • Blood around teeth and mouth
  • Bruises on belly
  • Difficulty breathing
  • Sore joints, reluctance to walk

A special form of Vitamin K reverses the toxic effects of rat bait. Because we are never sure how much poison your pet has consumed it is difficult to know how much Vitamin K should be given and for how long. We will ask you to watch for signs that more is needed.

After the Vitamin K is finished return to the Surgery for a blood test to check that the blood’s clotting ability is back to normal.

Diseases of dogs, Dogs, general, Internal diseases of Dogs

Pyometra or infections of the uterus

What is pyometra?

Pyometra is an accumulation of pus in the uterus. Toxic products form and make the bitch very sick.

How do I know if my dog has pyometra?

If the cervix is open pus drains from the vagina and can be seen on the skin or hair under the tail or on bedding and furniture.

If the cervix is closed, the trapped pus distends the uterus and abdomen. The bacteria in the pus release toxins into the circulation.  The dog goes off her food, vomits or passes diarrhoea, drinks a lot of water and becomes very depressed.

How is it treated?

Pyometra is an emergency. Surgery to remove the uterus and ovaries ensures complete recovery. If not treated toxins cause organ damage. If the cervix is closed the uterus may rupture and spill into the abdominal cavity. Either of these is rapidly fatal.  Intravenous fluids and antibiotics before and after surgery reverse the toxicity and control residual infection.

When does it occur?

Pyometra is most common in older bitches after many years of oestrus cycles without pregnancy.  Occasionally younger bitches are affected.

Pyometra occurs about 1-2 months after oestrus.

How is it diagnosed?

A non-desexed female dog that is very ill , drinking a lot of water, and has a vaginal discharge or an enlarged abdomen could have pyometra. They also have a high white blood cell count and serum globulin level. Toxins reduce the ability of the kidneys to concentrate the urine.

An ultrasound examination identifies an enlarged uterus and differentiates pyometra from pregnancy.

Why does my dog have pyometra?

Hormonal changes cause pyometra. After a bitch is on heat or in season (oestrus), progesterone levels stay high for 8-10 weeks, thickening the lining of the uterus in preparation for pregnancy. If pregnancy does not occur for several oestrus cycles, the lining continues to thicken and cysts form in it. The thickened, cystic lining secretes fluid creating an ideal environment for bacterial growth. High progesterone levels also inhibit contraction of uterine muscles preventing expulsion of the fluid.

Drugs containing progesterone and/or oestrogen also predispose bitches to pyometra.

How do bacteria get into the uterus?

The cervix is the gateway to the uterus. It remains tightly closed except during oestrus. When the cervix is open during oestrus vaginal bacteria can enter the uterus easily. If the uterus is normal, bacteria won’t survive.  However, when the uterine wall is thickened and weak, conditions are perfect for bacterial growth.

Diseases of dogs, Dogs, Internal diseases of Dogs

Pancreatitis

Fatty foods like sausages, cheese and the cat’s biscuits, cause acute pancreatitis in overweight middle-aged dogs.

Dogs with acute pancreatitis vomit, refuse their food, withdraw from the family and show signs of pain in the belly.  They hunch over, adopt a praying position, or are reluctant to move.

To treat pancreatitis we ban all food  and give intravenous fluids, antibiotics, anti-inflammatory drugs and pain relief. The pancreas produces enzymes that digest food, and hormones like insulin that help the body utilise glucose.

Under normal conditions, digestive enzymes produced by the pancreas are activated when they reach the small intestines. In pancreatitis, these enzymes are activated prematurely and digest the pancreas itself. The severity of the disease depends on the quantity of enzymes activated.

Some cases of pancreatitis are in reaction to particular medications or toxins.

Inflammation of the pancreas sometimes allows digestive enzymes to spill into the abdominal cavity resulting in damage to surrounding organs, such as the liver, bile ducts, gall bladder, and intestines.  Toxins spilling into the bloodstream cause shock and problems in more distant organs.

If we suspect pancreatitis we check the level of pancreatic enzymes in the blood. Some dogs with pancreatitis have normal enzyme levels. If we still suspect pancreatitis we run a pancreatic specific lipase test.

Recovery depends on the extent of the disease and the response to initial therapy. Dogs that present with shock and depression have a very guarded prognosis. Most of the mild forms of pancreatitis respond quickly to treatment and have a good outlook.

Most dogs recover with no long-term ill-effects. However, there are three possible long-term complications of severe or repeated pancreatitis.

  1. If a significant number of cells that produce digestive enzymes are destroyed, proper food digestion is compromised. The dog loses weight despite a ravenous appetite and produces voluminous, soft faeces.  This is known as pancreatic insufficiency and is treated with by adding the missing enzymes to the food.
  2. If the cells that produce insulin are destroyed diabetes mellitus can result.  Signs of diabetes include weight loss despite a good appetite coupled with excessive drinking and urination.  Insulin therapy may be necessary.
  3. In rare cases, adhesions between the abdominal organs cause momentary “catches” as your dog moves are a consequence of pancreatitis.
  4. After a bout of pancreatitis, dogs are prone to relapse and owners must make sure that their dog has no access to fatty foods. We recommend a low fat good quality dog food.
Caring for your Cat, Cats, Diseases of cats, general, Skin Diseases of Cats

Flea control in cats

Because of the all the rain over the last 6 months and now the very warm days, fleas are hatching in unprecedented numbers  around Canberra.

Signs of flea infestation:

  • Cats develop an allergy to flea bites. They groom or scratch excessively and develop “miliary” dermatitis.
  • The fleas cause anaemia in kittens and debilitated animals.
  • Cats are infested with tapeworm (Dipylidium caninum) from eating infected fleas during grooming.

Flea control

  • Conquer fleas on your cat with long lasting flea control products (Frontline, Advocate, Revolution, Advantage) applied as a spot on. Flea collars, shampoos and powders kill fleas present on your cat at the time of application but have little residual effect.
  • Remove flea eggs, larvae and pupae from the environment with regular vacuuming of carpets, sofas and beds. Throw away or burn the dust bag to prevent eggs and larvae developing.
  • Professional fumigation controls larvae and pupae.
  • Wash bedding in hot water or replace regularly.
  • Spray garden sheds, cars and favoured outdoor sleeping spots.

Cat fleas hatch from flea pupae in your house in warm, humid conditions. Our carpeted, centrally heated homes are ideal for the year round development of fleas.

After feeding on a cat adult female fleas lay eggs that fall off onto couches, carpets and beds. The microscopic eggs develop first into larvae that migrate deep into carpets, furniture or cracks in floors away from the light, and then into pupae. The pupae contain adult fleas which lie in wait for the next cat or dog to pass.

Effective flea control depends on knowing the flea’s life cycle.

Cats, Diseases of cats, general

Fight wound infections

Bites from another cat during a fight cause abscesses and infection. Dog, rat and other rodent bites are rare.

Consequences:

Cat bites on the head, forelimbs or at the base of the tail leave lumps that swell and burst. Your cat is lethargic and goes off his food.

When a cat bites its teeth go through the skin leaving small puncture wounds which seal over, trapping bacteria under the skin of the victim.

A pocket of pus forms an abscess. In areas where the skin is tighter, such as on the foot or the tail, the infection spreads through the tissues causing cellulitis.

Rarely more serious consequences such as a septic arthritis (infection of a joi

nt space) or osteomyelitis (infection of bone) result.

Treatment:

  • Antibiotics by injection or mouth stop the spread of infection and development of an abscess.
  • Surgery to drain the pus.
Caring for your Cat, Cats, Diseases of cats, general, Internal Diseases of Cats

Tooth decay

Plaque and bacteria mineralise on cat’s teeth to form tartar or calculus.

Tartar and red inflamed gums, or gingivitis, loosen teeth.

Holes in teeth at the gumline affect 80% of cats. These so-called neck lesions are intensely painful. Tartar builds on them and rubs the inside of the cheek. The only solution is extraction.

Cats with bad mouths show less interest in food or approach the food bowl eagerly then don’t eat.  They chew cautiously, drop food from the mouth, or swallow with difficulty. Dribbling, blood-tinged saliva, and bad breath are common. In some cases affected cats paw the mouth or shake the head. Reluctance to eat may lead to weight loss.

Many cats show no signs of bad teeth despite being in pain.  However after we clean their teeth they are obviously much happier and relaxed.

A scale and polish under general anæsthesia removes tartar and saves teeth.

Chunks of meat such as gravy beef or chicken thighs encourage chewing and prevent the build-up of plaque and tartar.  Greenies are a palatable treat that clean the teeth as well.  A bowlful of special dental foods such as Royal Canin dental or Hills t/d several times a week also prevent dental disease.  Chewing meat and dental biscuits stimulates the production of saliva, which contains natural antibacterial substances, and scrapes plaque and tartar from the teeth.

Calicivirus vaccination of kittens helps prevent gingivitis.

Cats, Diseases of cats, general, Internal Diseases of Cats

Bladder worries

Indoor cats  straining to urinate and not producing much but bloody urine have bladder problems. Some exhibit their frustration and pain all over the house.

The urinary passage of male or desexed male cats can block up with crystals and mucous. If your cat is tense and restless then he may have a blockage and you must contact a vet immediately before the bladder bursts.

Stress causes bladder inflammation or cystitis in some cats.

Kidney or bladder infections and bladder stones cause similar signs.

When you come to the vet surgery we examine your cat for urinary blockage and shock. Then we analyse your cat’s urine for infection, crystals and mucous plugs. We might order an X ray or ultrasound to rule out bladder stones.

If we find no sign of blockage, infection or stones then  we conclude that your cat has Feline Lower Urinary Tract Disease (FLUTD) or Interstitial Cystitis (FIC).

Contributing causes:

No single cause of FIC has been identified. However, several factors have been shown to increase the risk of FIC. These include:

Stress

  • Indoor confinement
  • Dry food
  • Obesity
  • Low water consumption
  • Sedentary lifestyle
  • Frequent meals

How can you prevent further episodes of FIC?

  • Introduce a predominantly wet food diet such as food in sachets or cans, or raw meat. If your cat prefers dry food you may have to introduce the new foods gradually. Add a little of the wet food to the biscuits and gradually increase the amount of wet food. Alternatively sprinkle the biscuits with water and increase the amount of water added over a few weeks until the biscuits are soft and wet.
  • Increase your cat’s water intake. You might try adding more water to the food or offering water flavoured with chicken stock. Some cats like running water. Pet fountains are available in many pet stores. Cats often like drinking water from the shower recess or basin. Provide water in a variety of bowls in different shapes, sizes and textures to identify your cat’s preference. If rain water or filtered water is available your cat may prefer it to tap water.
  • Encourage frequent urination. Provide at least one litter tray per cat plus one more filled with the preferred litter and in private locations.
  • Reduce stress in your cat’s life. Some cats are very sensitive to their environment and may respond to any changes by becoming nervous or fearful and developing problems such as cystitis. A comfortable quiet hideout for resting, such as a cupboard, quiet bed or sofa, or on top of the refrigerator, is essential for all felines. Some nervous individuals may require a refuge in a quiet, sheltered part of the house away from other pets and people, and furnished with the necessities of life.
  • Minimise interaction with other cats for fearful individuals. Check out the Indoor Cat website for signals that your cat is on edge. You may have to provide a feeding point, litter tray and hideout for each cat to minimise the tension.
  • A Feliway diffuser may help to reduce stress in many situations.
  • Enrich your cat’s environment. When we confine our cats indoors they become dependent on us not only for their physical needs and environment but for their emotional and intellectual needs as well. Cat scratching posts, toys that mimic prey, tunnels, outside runs and a variety of high spots and hideouts will keep your cat happy and stimulated. Your company is important. Even an old cat will appreciate a game with a ribbon on a stick or a glittery ball. Make your cat work for food by hiding it in various locations around the house or in food puzzles such as plastic containers with holes cut in the sides. The Indoor Pet website has lots of suggestions.

Caring for your Dog, Dogs, general

Dogs are good for you!

The doctors and scientists have confirmed what pet owners have known for centuries – dogs are good for you!

Pet ownership increases physical activity and reduces obesity, but also reduces stress and builds community.

Owning and walking a dog significantly increases the amount of walking a person does. Young girls who own a dog spend 29 minutes more per day in physical activity than their friends without a dog.

Scientists proved some years ago that obese people who diet and exercise with their obese dogs are much more likely to lose weight and keep it off than people who diet and exercise alone.

Recent studies of school age children have shown that just incidental play and interaction with the dog were enough to prevent obesity.

Children of dog-owning families were in better physical condition even if they did not personally walk the dog.

Dogs owners report that their dogs are a strong source of motivation, companionship and social support – that is great mates!

Dogs have social benefits and build community networks because owners interact with other people on walks and at dog related activities like obedience classes.